Product Description The Strike Industries AR Picatinny Stock Adapter allows you to replace a traditional receiver extension/buffer tube interface with a 1913 Picatinny mounting point for a compatible stock or stabilizer assembly. Designed for AR builds that do not require an in-line buffer and buffer spring to function, this adapter provides a fast, straightforward conversion while retaining the rear detent spring for the rear takedown pin. A compact 4-slot Picatinny rail section delivers a robust 1913 interface, and the integrated steel quick-detach (QD) sling socket can be oriented to the preferred side for flexible sling setup. Product Highlights Converts the rear of compatible AR-15 and AR-10 lower receivers to a 1913 Picatinny stock/stabilizer interface Integrated 4-slot Picatinny rail section for secure, repeatable mounting Captures/retains the rear takedown pin detent spring for reliable lower receiver function Steel QD sling socket can be oriented to the desired side for left/right sling configuration Simple, budget-friendly solution for bufferless and self-contained upper receiver setups Specs Brand: Strike Industries Manufacturer Part Number: SI-AR-PSA-BK UPC: 793811765304 Color: Black Mount Interface: 1913 Picatinny Rail Section: 4-slot Picatinny Compatibility: AR-15 and AR-10 lower receivers (for builds not requiring an in-line buffer/spring) Dimensions (L x W x H): 2.05 in x 1.42 in x 0.94 in Weight: 3.0 oz Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.